Ice-cream freezer



June 29 1926. 1,590,939

'J. w. GODDARD ICE CREAM FREEZER Filed March s. 1925 s sreetsshe'et 2 June 29 1926.

J. w. GODDARD ICE CREAM FREEZER Filed aaron s.V 192s 3 Sheets-Sheet 5 Ql 7m Patented June 29, 1926. Y

UNITED vST1-iras JAMES WATTS GODDARD, or LONDON, ENGLAND, AssrGNoR To lNnTTLr-:FOIQD LIMITED, or LONDON, ENGLAND. e y

i 1,599,939 Farrar Y Fries.,

` IOE-OBEAM FREEZER.

Application led March 3, 1923, Serial No. 622,627, and in Great Britain May 27, 1922.

rlhis invention relates to ice cream freezing apparatus of the kind which comprise an outer and an inner cylinder both hermetically closed and adapted to be rotated together, as by means of trunnion plus attached respectively to the end cover plates of the two cylinders.

One object of the present invention is to provide an improved construction-of suoli apparatus which will enable the cylinders to be readilytaken apart for the purpose of washing and drying, and also for the purpose of substituting a second inner cylinder after the contents of the first inner cylinder have been frozen, thereby enabling a second charge to be frozen without emptying the freezing mixture from the outer cylinder andl re-charging the same, to accomplish which the freezing mixture is imprisoned between the outer cylinder and a perforated rcylinder or basket encircling the inner cylnder. v

In the improved construction the outer cylinder has a circular aperture at each end, the diameter of which may approximate that of the outer cylinder itself, one of these apertures being closed rby a flanged fluidtight cover plate in the manner common in the closure of tins for'holding Vliquid contents. rlhe other aperture is adapted to receive the inner cylinder which is formed with a flange fitting into this aperture in the same manner as just yindicated so as to make a liquid-tight joint therewith. The inner cylinder is permanently closed at one end and the aperture in the other end, which is preferably of the full diameter of the inner cylinder', is closed liquid-tight by a flanged cover plate in the same manner. This last mentioned coverplate Vand also the cover plate of the outer cylinder at the opposite end of the apparatus are provided with tr-unnions projecting outwardly therefrom in the line of the axis of the apparatus and the whole apparatus may be rotatedvby means of these trunnions, either by a wire handle embracing the apparatus, whereby it may be rolled on a Vflat surface by hand, or one of the trunnions may be provided with a crank handle and the apparatus supported by its trunnions upon a suitable frame.

In a modified construction the perforated cylinder which encircles the inner cylinder Or cream container has a flanged rim, into the inside of which the similarly flanged rim of the cream cylinder lits liquid-tight while the flanged rim of said perforated cylinder itself lits liquid-tight into the inside of a flanged rim on one end of the outer cylinder.

To ensure liquid-tight fitting'at the various joints hereinbefore specified, the flanges of the outer cylinder, of the perforated cylinderfand of the inner cylinder are formed to gauge, by means of dies, separately from the respective cylinders and are ,subsequently brazed or otherwise rigidly attached to said cylinders. y K l One embodiment of the apparatus is illusti ated in the accompanying drawings,y

wherein F ig. l is a; central longitudinal section of the apparatus mounted on a supporting frame; Fig. 2 is an end elevation thereof; Fig. 8 is a longitudinal section, partly inv elevation, showing an optional additional featui'egrFig. et is a part longitudinal section showing another such additional feature; Fig. 5 shows inv elevation and cross section a modified construction ofthe innerq cylinder; and F 1g. 6 is a longitudinal section Vof another modified construction.

Referring particularly toFigs. l, 2 andV 3, a isfthe outer cylinder which has at each end a 'circular aperture ,the diameter I of which is, vas shown, slightly less than the vwith the cylinder and adapted to fit yliquid- 'tight into the aperture `at the other end of the cylinder a. The open end of cylinder' cl is closed by a iianged cover plate e which & SONS has rigidly attached to it a trunnion f in axial alignment with trunnion c. As shown in the drawings, trunnion 0 is provided with a crank handle c andthe two trunnions are supported in suitable 4open bearings on a rame g'so as to be lreadily removable thererom.

In using the apparatus the cylinder ci is first of all inserted in the outer cylinder a which is then placed in a vertical position with the open end uppermost; the space 'hetweenthetwo cylinders is charged with'thc freezing mixture and cover plate Zn applied;

llO

tene en the position of the apparatus -is reversed, and the inner cylinder charged with the mixtureto be lfroz/.en and cover plate e applied. The a )parate-s is now ready lor use either by planing' it Ynpon thestand g and rotating it by ineans of the crank handle c or Yloy rolling it upon a plane surface. Vyhen the freezing operation is completed, the'inner' cylinder s removed ,with its contente and. e second similar cylinder may he substituted .lor it containing' another Charge toV `be frozen. Uhl epeelel provision .is niede this would involve the emptying ont of the mixture from the the enter Cylin- 'der and re-eharging the latter with the drawn therewith when the latterv ie removed.

By rneensol tllS basket the .inner Cylinder may be removed and another similar Cylinder Yinserted Withoutdeturloanoe of the freezing .mixture or the necessity for emptying and' recharging-the outer cylinder.

,Any strain on the jointe at die outer end of cylinder may be relieved, ne indient-ed Fig, 4:, by nieans of a ring L which eneireles the inner end of eylinderd and is supported by a spider-frame or enne Il extending between the ringV and the outer cylinder.k These-anne ,may be 'rig-idly attached to thev outer cylinder, but not] neeeseerily so.

To rnoreaee the leondnetlng surface and thereby inedite-te the freezing operation, the

inner Cylinder may be eorrugeted ee Shown, for example, in Fig. 5 in Wllieh this Cylinder is made with a longltndinally corrugated Wall. p V i In the. modified eonstruetion shown in Figa 6, A isthe enter cylinder which is provided with flanges A, VA? at its respective ends, these Jflanges heling soldered or otherwise rigidly secured on the outside surface o f the cylinder A.I B l is a perforated cylinder which closely eneiroles the innereylindel C and ser-ves the pur-pose of retaining the freezingmixtnre When the inner .cylinder is removed ,for the Purpoee of reollergna lThe CylinderV B1nny,ne sho.v1 1in Fia 6, be open at one end, in which such .open end approzrimates closely to the adjacent end of cylinderl A; or the cylinder B may be provided with a .,elosed end, The other end of the perforated cylinder B is provided 'with a flanged nini B brazed or soldered to the end of the syl-finder, either on its inside snrtaee 4shown,V or externally thereto, and the flange .of the .Finn le Shaped by dies. to lit liquid-tight inte the flanged riin A of the outer Cylinder. In the saine Way the inner cylinder C, which contains the mixture to be frozen, as a flanged riln C bra-Zed or soldered around the'outer periphery of 'open endanld shaped tov tit liquid-tight into the month of the riiny B ofthe perforated cylinder' B, the opposite end oit the inner Cylinder being permanently Closed by lll@ hottolnCg. v

'Elie onen end the inner Cylinder C ie elosed by a @over plate D which is shaped to lit liquidftig'ht into the flanged rim .G oi the linder and the opposite end oi the outer litliquid-tight into the flanged riin A2,

As shown in the drawings, .the tivo lids oreover plates D, E may have rigidly attached thereto trinniions or'spindles D', E respectivel hy ineans of which the Whole apparatus inay he rotated zin a-lnown inanner either by a Wire handle embracing the.

be effeeted by making the end of the spindle D of non-circular shape and `fitting into a oorreepondnglyshaped ,hole n a disc .G Se'- eured to the cover plate D. A collar on the Spindle. D inside the bearing' on the Stand F Serves to prevent the disengagement of elle end of the spindle D with the dise Gr when the apparatus is rotated Vloythe crank halndie D?.

An apparatus of the eonstruetion hereinbefore deseribed has the advantage thaty each of the Cylinders can be readily cleaned, both inside and out, and replaced in position, there being no projectionsl or ledges Whereon either thelegitinia'te contents ofthe `Cylinders or any foreign matter' -ean lodge., or which interfere With the inanual 1eleaningof the apparatus. u

rllhe capacity of the apparatus can loe increased by providing an auxiliary cover Vplate for 4the inner .cylinder C, this l,cover plate being substituted 'for 'the .cover plate D when ,the contents of the'eylinder .C have been frozen andthe cylinder itself removed frein the apparatus tofgive place to a second `freshly ,charged inner eylinder. The 7cover plate is pnelerahly provided'lwith a handle for convenience. in applying and reInQVlng. 'Having thus deseribed thenature ofthe A is similarly closed by a oever n plaie E, the 4flange' of Whieh .is arranged to lli) said invention and the best means I know of carrying the same into practical eect, I claim y l. An icecream freezing apparatus of the kind herein referred to comprising in complate fitting liquid-tight in the open end of said inner cylinder, said inner cylinder together with the closure plate being integrally removable from the outer cylinder, and removable closure means for the interspace between the outer and inner cylinders, said closure means fitting liquid-tight into the second aperture of the outer cylinder.

2. An apparatus as claimed in cla-im l, comprising in combination a perforated cylinder encircling the inner cylinder, a flanged rim secured to said perforated cylinder, a flanged rim on the inner cylinder fitting liquid-tight into the first mentionediianged riin, a cover plate for one end of the inner cylinder fitting liquid-tight into thesaidv iianged rim of the inner cylinder and a flanged rim on the outer Cylinder fitting u liquid-tight around the flanged rim of the perforated cylinder.

3. An apparatus as claimed in claim 1, comprising axially disposed trunnions secured respectively to the removable closure plate of the inner cylinder and to the removable closure plate at the opposite end of th outer cylinder.

4. An apparatus asl claimed in claim l, comprising a ring encircling the inner end of the inner cylinder and arms extending between and secured to the ring and the outer cylinder.

5. An apparatus as claimed in claim ll, comprising an inner cylinder formed With a corrugated Wall for the purpose set forth.

In testimony whereof I have signed my name to this specification.

JAMES WATTS GODDARD.' 

